Whether it is male or female whoever is unable to procreate, it is always the female who is blamed and suffers the most. She is humiliated the most. If it is Pari then then CVs can give good message to society through AarYa and Radha maa not to humiliate such women or couple. They can enjoy parenthood by adopting a baby.
SP will not react in a negative way now. He is come over of that phase after G3's death. He is understanding the feelings of women now. Radha is an educated person and has modern thoughts. She is not like as mere khandan ki nishani and all.
More over Acceptance of Ansh by Yash as his waris is a big reality in front of them so all will support Pari. Only one thng will reamin to see whether they adopt Aayu or some orphan.
I think Pari will become all possesive about Aayu n so finally SP will advise Prateek to adopt a orphan rather than separating Aayu from AarYa. This will also give an opportunity to an orphan to get parents than Aayu getting 2 parents.